Index: modules/comment/comment.module
===================================================================
RCS file: /cvs/drupal/drupal/modules/comment/comment.module,v
retrieving revision 1.509
diff -u -r1.509 comment.module
--- modules/comment/comment.module	8 Dec 2006 16:16:30 -0000	1.509
+++ modules/comment/comment.module	8 Dec 2006 16:58:46 -0000
@@ -925,9 +925,12 @@
           $divs++;
           $output .= '<div class="indented">';
         }
-        else if ($comment->depth < $last_depth) {
-          $divs--;
-          $output .= '</div>';
+        else {
+          while ($comment->depth < $last_depth) {
+            $divs--;
+            $output .= '</div>';
+            $last_depth--;
+          }
         }
         $last_depth = $comment->depth;